Semantic information-based alternative plan generation for multiple query optimization

Date

2001-09-01

Author

Polat, Faruk
Alhajj, R

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

236
views

0
downloads

This paper addresses the impact of semantic information about queries on alternative plan generation (APG) for multiple query optimization (MQO). MQO covers optimizing the execution of a set of queries together where each query in the set to be optimized has several alternative execution plans. A multiple query optimizer selects an alternative plan for each query to obtain an optimal global execution plan. Our approach uses information such as common relations, common possible joins and common conditions to investigate factors that provide a good estimation of shared tasks between queries. It generates alternative plans for queries having more common tasks. The amount of possible sharing between the queries is determined and used to obtain a fewer number of high quality alternative plans. While doing this, we try to preserve the optimum global execution cost obtained as the result of MQO. Finally, the proposed approach is compared with the other APG approaches described in the literature. The obtained results show that a near optimal solution can be obtained with our technique in less time. (C) 2001 Elsevier Science Inc. All rights reserved.

Subject Keywords

Control and Systems Engineering, Theoretical Computer Science, Software, Information Systems and Management, Artificial Intelligence, Computer Science Applications

URI

https://hdl.handle.net/11511/38529

Journal

INFORMATION SCIENCES

DOI

https://doi.org/10.1016/s0020-0255(01)00114-1

Collections

Department of Computer Engineering, Article

Suggestions

OpenMETU
Core

Spatio-temporal querying in video databases Koprulu, M; Cicekli, NK; Yazıcı, Adnan (Elsevier BV, 2004-03-22) A video data model that supports spatio-temporal querying in videos is presented. The data model is focused on the semantic content of video streams. Objects, events, activities, and spatial properties of objects are main interests of the model. The data model enables the user to query fuzzy spatio-temporal relationships between video objects and also trajectories of moving objects. A prototype of the proposed model has been implemented.
Comparison of feature-based and image registration-based retrieval of image data using multidimensional data access methods Arslan, Serdar; Yazıcı, Adnan; Sacan, Ahmet; Toroslu, İsmail Hakkı; Acar, Esra (Elsevier BV, 2013-07-01) In information retrieval, efficient similarity search in multimedia collections is a critical task In this paper, we present a rigorous comparison of three different approaches to the image retrieval problem, including cluster-based indexing, distance-based indexing, and multidimensional scaling methods. The time and accuracy trade-offs for each of these methods are demonstrated on three different image data sets. Similarity of images is obtained either by a feature-based similarity measure using four MPEG-...
ILP-based concept discovery in multi-relational data mining Kavurucu, Yusuf; Karagöz, Pınar; Toroslu, İsmail Hakkı (Elsevier BV, 2009-11-01) Multi-relational data mining has become popular due to the limitations of propositional problem definition in structured domains and the tendency of storing data in relational databases. Several relational knowledge discovery systems have been developed employing various search strategies, heuristics, language pattern limitations and hypothesis evaluation criteria, in order to cope with intractably large search space and to be able to generate high-quality patterns. In this work, an ILP-based concept discov...
Exploiting Navigational Queries for Result Presentation and Caching in Web Search Engines Ozcan, Rifat; Altıngövde, İsmail Sengör; Ulusoy, Ozgur (Wiley, 2011-04-01) Caching of query results is an important mechanism for efficiency and scalability of web search engines. Query results are cached and presented in terms of pages, which typically include 10 results each. In navigational queries, users seek a particular website, which would be typically listed at the top ranks (maybe, first or second) by the search engine, if found. For this type of query, caching and presenting results in the 10-per-page manner may waste cache space and network bandwidth. In this article, w...
An access structure for similarity-based fuzzy databases Yazıcı, Adnan (Elsevier BV, 1999-04-01) A significant effort has been made in representing imprecise information in database models by using fuzzy set theory. However, the research directed toward access structures to handle fuzzy querying effectively is still at an immature stage. Fuzzy querying involves more complex processing than the ordinary querying does. Additionally, a larger number of tuples are possibly selected by fuzzy conditions in comparison to the crisp ones. It is obvious that the need for fast response time becomes very important...

Citation Formats

F. Polat and R. Alhajj, “Semantic information-based alternative plan generation for multiple query optimization,” INFORMATION SCIENCES, pp. 103–133, 2001, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/38529.